Issues with Julia forking

[fingolfin]

Right now, JuliaInterface contains this hack in JuliaImportPackage:

        #Try to compile package by loading it into external Julia
        #Get Julia path
        julia_path := ConvertedFromJulia( JuliaEvalString( "Sys.BINDIR" ) );
        Exec( Concatenation( julia_path, "/../bin/julia -e \"", callstring,
                  "\"" ) );

The reason for this (as I just learned from @sebasguts ) is that otherwise, Julia tries to compile the given package itself, which requires a fork; but that fails with some error (apparently in libuv)

For now, this workaround is good enough, but it'd be useful to figure out what exactly the problem is, and how to fix it properly.

[sebasguts]

This bug seems to be gone. I think we could savely remove this whole Exec stuff. This also applies to #38

[fingolfin]

Resolved by PR #55